of the history that there was such a sense that there was going to be violence here in washington on that day, and people who came were taking a risk. often times they were young people whose parents feared for their safety and coming to washington that day. we've heard reference to the fact that troops were surrounding the city. you may not remember, but it was held on a wednesday to ensure that people would not come and remain over any weekend, and buses came in early that morning at dawn, and the buses were lined up near to the national mall, and positioned so they could quickly exit, and all the liquor stores in town were closed, you know. the security was just incredible. the congress was gone. those people who came and who made the effort really stood out and sent a message to the nation. >> to the king, the family who have sacrificed and inspired so much, as president clinton, president carter, vice-president biden, jill, fellow americans, five decades ago today americans came to this honored place to lay claim to a promise made at our founding. we hold these truths to be self-evident.